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CSDGM (Content Standards for Digital Geospatial Metadata) compliant digital metadata may be created, stored, and used in a variety of formats. The most basic is an ASCII text document. An ASCII document is easy to transfer to other users independent of the hardware/software platform they use. Another common format is Hypertext Markup Language (HTML). HTML provides an attractive way to view metadata using a browser such as Netscape Navigator, Mosaic, or Microsoft Internet Explorer. Recently, there has been strong interest in creating metadata in Standard Generalized Markup Language (SGML). SGML provides an effective way to tag metadata elements. This will be important for indexing and searching metadata on Clearinghouses and to provide a means to exchange metadata between metadata users, metadata databases, and metadata tools.